CN107655605A - A kind of small-sized trunnion axis wind energy conversion system axial thrust-measuring device - Google Patents
A kind of small-sized trunnion axis wind energy conversion system axial thrust-measuring device Download PDFInfo
- Publication number
- CN107655605A CN107655605A CN201711127676.7A CN201711127676A CN107655605A CN 107655605 A CN107655605 A CN 107655605A CN 201711127676 A CN201711127676 A CN 201711127676A CN 107655605 A CN107655605 A CN 107655605A
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- horizontal
- input shaft
- axial thrust
- small
- bearing
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 20
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 17
- 230000003287 optical effect Effects 0.000 claims abstract description 16
- 229920001971 elastomer Polymers 0.000 claims abstract description 15
- 239000000806 elastomer Substances 0.000 claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 16
- 230000035945 sensitivity Effects 0.000 abstract description 7
- 230000005483 Hooke's law Effects 0.000 abstract description 4
- 239000011888 foil Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0038—Force sensors associated with force applying means applying a pushing force
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a kind of small-sized trunnion axis wind energy conversion system axial thrust-measuring device, including pedestal and the small-sized horizontal-shaft wind turbine being arranged at the top of pedestal, small-sized horizontal-shaft wind turbine includes a horizontal input shaft, one horizontal output shaft and the impeller for being arranged on horizontal input shaft front end, a fibre optical sensor is also set up at the top of pedestal, horizontal input shaft can be moved rearwards in the axial direction by during axial thrust, elastomer is provided with the hollow cylinder of horizontal output shaft front end, elastomer is only compressed when horizontal input shaft is by axial thrust, the front side of the sensitive surface face annular shoulder of fibre optical sensor or back end surface, fibre optical sensor is measuring the axial displacement of the annular shoulder when horizontal input shaft is by axial thrust, according to Hooke's law can calculate elastomer elastic force be small wind turbine axial thrust.Compact-sized, easy to operate, reliable, high sensitivity of the invention, measurement accuracy is high, strong antijamming capability, service life length.
Description
Technical field
The present invention relates to a kind of measurement apparatus, more particularly to a kind of small-sized trunnion axis wind energy conversion system axial thrust-measuring device.
Background technology
Axial thrust-measuring device mainly mainly includes following several by strain gauge transducer, existing measurement apparatus at present
Kind structure, such as convex shoulder can be set on feathering axis, promote one to be installed vertically on by the convex shoulder on feathering axis
Bearing on measurement column transmits axial force, strain gauge adhesion on a side vertical with horizontal axis of rotation on measurement column,
When bearing axial force, foil gauge produces deformation to measure axial thrust；It is this relatively simple for structure, but between convex shoulder and bearing
Spin friction, and the slow sensitivity that can all limit measurement apparatus of response of foil gauge and measurement accuracy.In the prior art
Also such structure, by between the end on bearing outer ring both sides of supporting rotating shaft and the chimb of outer casing supporting
The foil gauge esthesis of elastic ring front/rear end and deform upon to measure axial thrust, this structure is also relatively simple, and can be with
One elastic ring is respectively installed before and after bearing, measures the axial force of both direction respectively, because this structure is easy to be connected into full-bridge survey
Circuit is measured, therefore sensitivity and measurement accuracy are of a relatively high.Prior art also has a kind of conventional structure, by being uniformly pasted onto
The foil gauge of proving ring inwall axial direction produces deformation to measure axial thrust under responsive to axial force, and this is simple in construction, tight
Gather, interfering between foil gauge is smaller, therefore sensitivity and precision are of a relatively high, and measurement range is wider.
But above-mentioned prior art is because the strain gauge transducer wherein used is all contact, so on the whole,
The sensitivity of the measurement apparatus of above form and measurement accuracy are generally relatively low.In addition, also have in the prior art a kind of using uniform
It is distributed in the device of 3 or more than the 3 small dynamometer measurement axial thrust on bearing outer ring periphery, the axial thrust suffered by bearing
As each small dynamometer force value sum, this structure is because small dynamometer must be processed very compact, so manufacturing process is complicated, cost
It is higher.
The content of the invention
The shortcomings that for above-mentioned prior art and deficiency, the present invention is intended to provide a kind of new small-sized horizontal-shaft wind turbine
Axial thrust-measuring device, using contactless fibre optical sensor, the structure using spring as twin shaft connection middle transition part,
To overcome weak existing touch sensor nonlinear characteristic and output signal, poor anti jamming capability, be limited etc. no by space
Foot, so as to improve measurement apparatus sensitivity and measurement accuracy, strengthen antijamming capability, increase the service life.
The present invention is that technical scheme is used by solving its technical problem：
A kind of small-sized trunnion axis wind energy conversion system axial thrust-measuring device, including pedestal and be arranged at the top of the pedestal
Small-sized horizontal-shaft wind turbine, the small-sized horizontal-shaft wind turbine include a horizontal input shaft, a horizontal output shaft and are arranged on
The impeller of the horizontal input shaft front end, the pedestal top also set up a fibre optical sensor, it is characterised in that
-- at least two bearings are set along the axial direction time interval of the horizontal input shaft at the top of the pedestal, it is described
Horizontal input shaft is axially displaceably supported at least two bearing, can when the horizontal input shaft is by axial thrust
It is moved rearwards in the axial direction,
-- the horizontal output shaft and the horizontal input shaft are coaxially arranged, the horizontal output shaft and the horizontal input
Axle is integrally solid shafting, and its front end is in hollow cylinder structure, and the front end of the hollow cylinder is circumferentially evenly arranged with some
Square-wave-shaped groove, it is raised that the outer surface of the end of the horizontal input shaft along solid shafting is circumferentially uniformly arranged some square-wave-shapeds, institute
The raised square-wave-shaped groove with the horizontal output shaft front end of square-wave-shaped for stating horizontal input shaft end is adapted, and the level is defeated
When shaft is in connection status with the horizontal input shaft, the square-wave-shaped projection of the horizontal input shaft end is inserted in the water
In the square-wave-shaped groove of flat output shaft front end, and elastomer is provided with the hollow cylinder of the horizontal output shaft front end, it is described
Elastomer is only compressed when the horizontal input shaft is by axial thrust,
-- the end of the horizontal input shaft sets an annular shoulder along its outer peripheral face, and the annular shoulder is located at the side
Between wave crest and the bearing set close to the end of the horizontal input shaft, the sensing table of the fibre optical sensor
The front side of annular shoulder or back end surface described in the face of face, the fibre optical sensor to measure work as the horizontal input shaft by
The axial displacement of annular shoulder during axial thrust.
The small-sized trunnion axis wind energy conversion system axial thrust-measuring device of the present invention, its operation principle are：Pneumatic equipment bladess are big
Produced in gas by the detour flow of arrives stream wind speed and rise resistance, so as to produce moment of torsion, horizontal input shaft rotation is driven, due to level
The square-wave-shaped projection of input shaft end is inserted in the square-wave-shaped groove of the horizontal output shaft front end, the rotation of horizontal input shaft
Horizontal output shaft can be driven to rotate, then external output mechanical energy, then electric energy is converted mechanical energy into by devices such as generators,
And axial thrust is produced, it is moved to the left the annular shoulder on horizontal input shaft, and make to be placed in horizontal output shaft and level is defeated
Enter the elastomer compression of shaft end, the axial displacement of annular shoulder is that the compress variation of elastomer can be by Fibre Optical Sensor
Device is measured, further according to Hooke's law can calculate elastomer elastic force be small wind turbine axial thrust.
Preferably, at least three horizontal bearing axles, each level have been evenly distributed between at least two bearing
The rear and front end of bearing axle is fixed at least two bearing, and the rear and front end of each horizontal bearing axle is all provided with
The bearing of an identical size is put, and the equal interference of inner ring of each bearing is set on the horizontal bearing axle, each bearing
Outer ring between clamp the horizontal input shaft, the horizontal input shaft can be moved rearwards in the axial direction by during axial thrust.
Preferably, the elastomer is spring.
Preferably, the impeller includes wheel hub and some pneumatic equipment bladess being arranged on the wheel hub, and the wheel hub is consolidated
Surely it is arranged on the front end of the horizontal input shaft.
Preferably, the wheel hub is fastened on the front end step surface of the horizontal input shaft by fastener.
Preferably, the rear and front end of each horizontal bearing axle is fixed at least two bearing by fastener.
Preferably, at least two bearing is fixed at the top of the pedestal by fastener.
Further, the fastener includes nut, spring washer and plain cushion.
Preferably, the rear and front end of each horizontal bearing axle is provided with step surface, and the inner ring of each bearing passes through institute
State step surface to be fixed on each horizontal bearing axle, and each bearing is close to the disposed inboard of the bearing.
Compared with the existing technology, small-sized trunnion axis wind energy conversion system axial thrust-measuring device of the invention has significant technology
Effect：In the small-sized trunnion axis wind energy conversion system axial thrust-measuring device of the present invention, moment of torsion passes through horizontal input shaft caused by wind wheel
Couple a horizontal output shaft externally to export, coupling therebetween sets a square-wave-shaped attachment structure for carrying elastomer, the connection
Mechanism can be buffered largely caused by wind wheel axially while ensureing that the power between input shaft and output shaft transmits
Thrust, the impact to other follow-up power set is avoided, on the other hand, by the annular shoulder for being arranged on horizontal input shaft rear end
Cooperation between fibre optical sensor, the axle of elastomer is directly characterized by the axial displacement of the annular shoulder of fiber sensor measuring
To decrement, the Hooke's law then reached by the linear list of elastomer calculates wind energy conversion system axial thrust, overcomes existing measurement
Because using weak touch sensor (foil gauge etc.) nonlinear characteristic, output signal, poor anti jamming capability, by space in device
The deficiencies of limitation so that whole axial thrust-measuring device is compact-sized, easy to operate, reliable, high sensitivity, measurement essence
Degree is high, strong antijamming capability, service life length.
Brief description of the drawings
Fig. 1 is the small-sized trunnion axis wind energy conversion system axial thrust-measuring device schematic diagram of the present invention；
Fig. 2 is the partial sectional view of horizontal output shaft 1；
Fig. 3 is the left view of horizontal output shaft 1；
Fig. 4 is the front view of horizontal input shaft 2；
Fig. 5 is the right view of horizontal input shaft 2；
Fig. 6 is the front view of horizontal bearing axle 9；
Fig. 7 is the sectional view of the left hand edge vertical axis of 7 left side bearing of bearing 8.
Embodiment
For the objects, technical solutions and advantages of the present invention are more clearly understood, develop simultaneously embodiment referring to the drawings, right
The present invention is further described.It should be noted that the implementation for not illustrating or describing in accompanying drawing, is art
In form known to a person of ordinary skill in the art.In addition, the direction term mentioned in following examples, for example, " on ", " under ", " preceding ",
" rear ", "left", "right", " top ", " bottom " etc., only it is the direction of refer to the attached drawing.Therefore, the direction term used is for illustrating simultaneously
It is non-to be used for limiting the present invention.
As shown in figure 1, the small-sized trunnion axis wind energy conversion system axial thrust-measuring device of the present invention, including pedestal 16 and setting
Small-sized horizontal-shaft wind turbine at the top of pedestal 16, small-sized horizontal-shaft wind turbine include horizontal input shaft 2, horizontal output shaft 1 with
And the impeller of the front end of horizontal input shaft 2 is arranged on, impeller includes wheel hub 18 and some pneumatic equipment bladess being arranged on wheel hub 18
17, wheel hub 18 is fixedly installed on the front end of horizontal input shaft 2, and wheel hub 18 passes through the fasteners such as nut 19, spring washer 20 and plain cushion 21
It is fastened on the front end step surface of horizontal input shaft 2.
As shown in Fig. 1,6,7, axial direction time interval of the top of pedestal 16 along horizontal input shaft sets at least two
Seat 6,7, each bearing 6,7 are fixed on the top of pedestal 16 by fasteners such as screw 13, spring washer 14 and plain cushions 15.At least two bearings
6th, 4 horizontal bearing axles 9 have been evenly distributed between 7, the rear and front end of each horizontal bearing axle 9 passes through nut 10, the and of spring washer 11
The grade fastener of plain cushion 12 is fixed at least two bearings 6,7, and the rear and front end of each horizontal bearing axle 9 is provided with platform
Terrace, the bearing 8 of an identical size is respectively provided with each step surface, and the equal interference of inner ring of each bearing 8 is set in horizontal bearing axle 9
On, each bearing 8 is close to the disposed inboard of bearing 6,7, clamp horizontal input shaft 2 between the outer ring of each bearing 8, horizontal input shaft
2 can be moved rearwards in the axial direction by during axial thrust.
As shown in Fig. 1~5, horizontal output shaft 1 and horizontal input shaft 2 are coaxially arranged, horizontal output shaft 1 and horizontal input shaft
2 entirety are solid shafting, and its front end is in hollow cylinder structure, and the front end of hollow cylinder is circumferentially evenly arranged with some square-wave-shapeds
Groove, it is raised that the outer surface of the end of horizontal input shaft 2 along solid shafting is circumferentially uniformly arranged some square-wave-shapeds, horizontal input shaft 2
The square-wave-shaped of end is raised to be adapted with the square-wave-shaped groove of the front end of horizontal output shaft 1, horizontal output shaft 1 and horizontal input shaft 2
During in connection status, the square-wave-shaped projection of the end of horizontal input shaft 2 is inserted in the square-wave-shaped groove of the front end of horizontal output shaft 1
In, and elastomer 3 (such as spring) is provided with the hollow cylinder of the front end of horizontal output shaft 1, elastomer 3 is only in horizontal input shaft
2 are compressed by during axial thrust.
As shown in figure 1, the top of pedestal 16 also sets up a fibre optical sensor 5, the end of horizontal input shaft 2 is set along its outer peripheral face
Put an annular shoulder 4, annular shoulder 4 be located at square-wave-shaped is raised and end close to horizontal input shaft 2 is set a bearing 6 it
Between, the back end surface of the sensitive surface face annular shoulder 4 of fibre optical sensor 5, fibre optical sensor 5 inputs to measure when horizontal
Axial displacement of the axle 2 by annular shoulder during axial thrust 4.
What the present invention was realized in：
Pneumatic equipment bladess 17 are produced by the detour flow of arrives stream wind speed rise resistance in an atmosphere, so as to produce moment of torsion, band
Dynamic horizontal input shaft 2 and horizontal output shaft 1 rotate output mechanical energy, then convert mechanical energy into electric energy by generator, and produce
Raw axial thrust, is moved to the left the annular shoulder 4 on horizontal input shaft 2, and makes to be placed in horizontal output shaft 1 and horizontal input
The compression of spring 3 of the end of axle 2, the displacement of annular shoulder 4 are that the compress variation of spring 3 is measured by fibre optical sensor 5,
Further according to Hooke's law can calculate spring 3 elastic force be small-sized horizontal-shaft wind turbine axial thrust.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components, it is named
Title etc. can be different.The equivalent or simple change that all construction, feature and principles according to described in present inventive concept are done, is included in
In protection scope of the present invention.Those skilled in the art can do various to described specific embodiment
The modification of various kinds or supplement are substituted using similar mode, without departing from structure of the invention or surmount present claims
Scope defined in book, protection scope of the present invention all should be belonged to.
Claims (9)
1. a kind of small-sized trunnion axis wind energy conversion system axial thrust-measuring device, including pedestal and it is arranged on small at the top of the pedestal
Type horizontal-shaft wind turbine, the small-sized horizontal-shaft wind turbine include a horizontal input shaft, a horizontal output shaft and are arranged on institute
The impeller of horizontal input shaft front end is stated, a fibre optical sensor is also set up at the top of the pedestal, it is characterised in that
-- at least two bearings, the level are set along the axial direction time interval of the horizontal input shaft at the top of the pedestal
Input shaft is axially displaceably supported at least two bearing, and the horizontal input shaft is by can be in axle during axial thrust
It is moved rearwards upwards,
-- the horizontal output shaft and the horizontal input shaft are coaxially arranged, and the horizontal output shaft and the horizontal input shaft are whole
Body is solid shafting, and its front end is in hollow cylinder structure, and the front end of the hollow cylinder is circumferentially evenly arranged with some square waves
Shape groove, it is raised that the outer surface of the end of the horizontal input shaft along solid shafting is circumferentially uniformly arranged some square-wave-shapeds, the water
The raised square-wave-shaped groove with the horizontal output shaft front end of square-wave-shaped of flat input shaft end is adapted, the horizontal output shaft
When being in connection status with the horizontal input shaft, it is defeated that the square-wave-shaped projection of the horizontal input shaft end is inserted in the level
In the square-wave-shaped groove of shaft front end, and elastomer, the elasticity are provided with the hollow cylinder of the horizontal output shaft front end
Body is only compressed when the horizontal input shaft is by axial thrust,
-- the end of the horizontal input shaft sets an annular shoulder along its outer peripheral face, and the annular shoulder is located at the square-wave-shaped
Between the bearing that raised and close to the horizontal input shaft end is set, the sensitive surface of the fibre optical sensor is just
Front side or back end surface to the annular shoulder, the fibre optical sensor work as the horizontal input shaft by axial direction to measure
The axial displacement of annular shoulder during thrust.
2. small-sized trunnion axis wind energy conversion system axial thrust-measuring device according to claim 1, it is characterised in that it is described at least
At least three horizontal bearing axles are evenly distributed between two bearings, the rear and front end of each horizontal bearing axle is fixed on institute
State at least two bearings, and the rear and front end of each horizontal bearing axle is respectively provided with the bearing of an identical size, and respectively
The equal interference of inner ring of the bearing is set on the horizontal bearing axle, and it is defeated that the level is clamped between the outer ring of each bearing
Enter axle, the horizontal input shaft can be moved rearwards in the axial direction by during axial thrust.
3. small-sized trunnion axis wind energy conversion system axial thrust-measuring device according to claim 1, it is characterised in that the elasticity
Body is spring.
4. small-sized trunnion axis wind energy conversion system axial thrust-measuring device according to claim 1, it is characterised in that the impeller
Including wheel hub and some pneumatic equipment bladess being arranged on the wheel hub, the wheel hub is fixedly installed on the horizontal input shaft
Front end.
5. small-sized trunnion axis wind energy conversion system axial thrust-measuring device according to claim 4, it is characterised in that the wheel hub
It is fastened on by fastener on the front end step surface of the horizontal input shaft.
6. small-sized trunnion axis wind energy conversion system axial thrust-measuring device according to claim 1, it is characterised in that each water
The rear and front end of plane bearing axle is fixed at least two bearing by fastener.
7. small-sized trunnion axis wind energy conversion system axial thrust-measuring device according to claim 1, it is characterised in that it is described at least
Two bearings are fixed at the top of the pedestal by fastener.
8. the small-sized trunnion axis wind energy conversion system axial thrust-measuring device according to the claims, it is characterised in that described
Fastener includes nut, spring washer and plain cushion.
9. the small-sized trunnion axis wind energy conversion system axial thrust-measuring device according to the claims, it is characterised in that each institute
The rear and front end for stating horizontal bearing axle is provided with step surface, and the inner ring of each bearing is fixed on each described by the step surface
On horizontal bearing axle, and each bearing is close to the disposed inboard of the bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711127676.7A CN107655605B (en) | 2017-11-15 | 2017-11-15 | Axial thrust measuring device of small horizontal axis wind turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711127676.7A CN107655605B (en) | 2017-11-15 | 2017-11-15 | Axial thrust measuring device of small horizontal axis wind turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107655605A true CN107655605A (en) | 2018-02-02 |
| CN107655605B CN107655605B (en) | 2024-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711127676.7A Active CN107655605B (en) | 2017-11-15 | 2017-11-15 | Axial thrust measuring device of small horizontal axis wind turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107655605B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649863A (en) * | 2020-06-15 | 2020-09-11 | 盐城工学院 | Wind power detection device of wind driven generator |
| CN118257787A (en) * | 2024-05-31 | 2024-06-28 | 武汉理工大学 | Water lubrication thrust bearing and performance test method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649863A (en) * | 2020-06-15 | 2020-09-11 | 盐城工学院 | Wind power detection device of wind driven generator |
| CN111649863B (en) * | 2020-06-15 | 2021-02-26 | 盐城工学院 | Wind power detection device of wind driven generator |
| CN118257787A (en) * | 2024-05-31 | 2024-06-28 | 武汉理工大学 | Water lubrication thrust bearing and performance test method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107655605B (en) | 2024-02-09 |
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